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J. H. VAIL. ELECTRIC LIGHT FIXTURE.

Pate nted Dec. 2, 1884.

INVENTOR NITED- STATES PATENT OFFICE.

JONATHAN H. VAIL, OF NEW YORK, N. Y.

ELECTRIC-LIGHT FIXTURE.

SPECIFICATION forming part of Letters Patent No. 308,712, dated December 2, 1884.

Application filed November 24, 1883.

.T aZZ whom it may concern:

Be it known that I, JONATHAN H. VAIL, of New York, in the county and State of New York, have invented a new and useful Improvement in Electric Light Fixtures, of which the following is a specification.

The object of my invention is to protect the external connections of incandescing electric lamps from moisture in places such as sugarrefineries, distilleries, bleacheries, &e.-where the atmosphere is very moist. Such connections are usually made within a wooden socket, which is likely to become warped out'ot shape by the dampness, so that the contacts within it may be impaired.

My invention consists in the novel devices and combinations of devices employed by me in accomplishing this object, as hereinafter set forth and claimed. My invention is illustrated in the annexed drawings, in which Figure l is a view in elevation of a lamp and socket with the inclosing-chamber; and Fig. 2 shows the lamp and which is soldered a metal sleeve having its lower end, 0, externally screw-threaded and its upper end, (I, internally screw-threaded. The lamp-socket O, with the lamp attached, is screwed to the lower end, 0, of the sleeve." The cap E, carrying the lamp and socket, is then screwed upon the glass chamber D, the lamp thus depending within the chamber. A rubber washer, e, is attached to the interior of cap E, so that the chamber is closed moisture-tight when the parts are'screwed together. The upper end, d, of the sleeve may then be (No model.)

screwed to the end of any suitable fixture, Gr, through which the wires b b to the interior of the socketrun, the connections being made in the usual manner.

It is evident that the lamp and inclosingchamber may be placed upright instead of inverted. It is evident that in this case what I speak of in the specification and claims as the top or upper part of any of the devices becomes the lower part ofthe same, there being, however, no change in the construction or relative arrangement of the parts.

hat I claim is- 1. The combination, with an incandescing electric lamp and its socket or holder, of a globe inclosing the lamp and socket, and a cap closing said globe above the socket, substantially as set forth.

2. The combination, with an incandescing electric lamp, a socket or holder therefor, and a supporting-fixture, of a moisture-proof chamber supported by said fixture and inclosing the lamp and socket, substantially as set orth.

3. The combination, with an incandescing electric lamp, a socket or holder therefor, and a supporting-fixture, of a cap supported by the fixture above the socket, and a globe united to said cap by a moisture-tight joint and inclosing the lamp and socket, substantially as set forth.

4. The combination, with the lamp and socket and the supporting-fixture, of the in closing-globe and the cap, the last being attached to the fixture and also to the socket, and connected with the globe by a moisturetight joint, substantially as set forth.

5. The combination of the lamp and socket, the glass case and metal cap, and the'central sleeve attached to the socket and to a supportingfixture, substantially as set forth.

This specification signed and witnessed this 9th day of November, 1883.

JONATHAN H. VAIL.

Witnesses:

H. WV. SEELY, EDWARD H. PYATT. 

